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wireless communication ece comprehensive viva questions and answers


Posted by:
Created at: Friday 05th of April 2013 08:08:02 AM
Last Edited Or Replied at :Friday 05th of April 2013 08:08:02 AM
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BLUETOOTH TECHNOLOGY IN WIRELESS COMMUNICATIONS full report


Posted by: computer science topics
Created at: Monday 07th of June 2010 09:40:00 AM
Last Edited Or Replied at :Friday 05th of October 2012 02:06:48 AM
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dition to wireless device connections up to 10m (up to 100 m if he transmitterâ„¢s power is increased), devices used not be within line of sight and may even connect through walls or other nonmetal objects. This allows for applications such as a cell phone in a pocket or a briefcase acting as a modem for laptop or PDA.
Bluetooth is designed to be low cost, inventorially under $ 10/unit. On the flip side, however, are the limited connection distance and, even more damaging, the transmission speeds. Bluetooth supports only 780 kb/s, which may be used for 721 kb/s unidirectional data transf..................[:=> Show Contents <=:]



innovative projects


Posted by: seminar topics
Created at: Wednesday 31st of March 2010 11:22:51 AM
Last Edited Or Replied at :Tuesday 07th of February 2012 10:35:38 PM
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detect & rescue robot
Highly Vigilant Flying Robot This is an aerial helicopter with Image Capturer
Design &
Implementation of an Advanced Visual Guided Robot Robot movements using Facial features
Rob Shoot: An Automatic System for Accurate Shooting This is a shooting robot designed with versatile features
Design of a collaborative wheelchair with path guidance assistance This paper describes the development & assessment of a Collaborative Wheelchair Assistant
Industrial spy robot This is a spy robot with cctv features
Voice Controlled Temperature sensing robot This i..................[:=> Show Contents <=:]



freespace optics full report


Posted by: computer science technology
Created at: Sunday 24th of January 2010 10:58:39 AM
Last Edited Or Replied at :Friday 24th of February 2012 11:24:11 PM
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these standards.
Advantages Of Free-Space Optics
The FSO system requires less than one fifth of the capital outlay of comparable ground-based fiber-optic technologies. Optical-fibers are too costly. Connecting the buildings with optical-fiber cost US $100000 - $200000/km in metropolitan areas, 85 percent of the total figure tied to trenching and installation. To install fiber you have to dig the road. Street trenching and digging are not only expensive, they cause traffic jams (which increase air pollution), displace trees, and sometimes destroy historical areas. Using FSO, a service provid..................[:=> Show Contents <=:]



DISTRIBUTED WIRELESS COMMUNICATION SYSTEM full report


Posted by: computer science technology
Created at: Monday 18th of January 2010 06:39:08 AM
Last Edited Or Replied at :Saturday 10th of March 2012 03:17:43 AM
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will have access to different services, increased coverage, the convenience of a single device, one bill with reduced total access cost, and more reliable wireless access even with the failure or loss of one or more networks. At the moment, 4G is simply an initiative by R&D labs to move beyond the limitations, and deal with the problems of 3G (which is having trouble meeting its promised performance and throughput).
At the most general level, 4G architecture will include three basic areas of connectivity:
Personal Area Networking (such as Bluetooth), local high-speed access points on the ..................[:=> Show Contents <=:]



innovative projects


Posted by: electronics seminars
Created at: Friday 15th of January 2010 12:33:27 PM
Last Edited Or Replied at :Friday 15th of January 2010 12:33:27 PM
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c. VECHILE SPEED CONTROLLERS FOR SAFTEY ZONE USING RF
d. ALERT INDUSTRIAL POLLUTION AND DIVERT THE TRAFFIC USING RF
e. ADVANCE SAFTY LOCKERS BASED ON IC LOGIC - USERS WITH CODE
f. COMMUNICATIONS BY AIR CRAFT PILOT AND CONTROL ROOM USING NAVIGATION LAMP
g. CONVENTIONAL ELECTIC MOTOR STARTERS CONVERTED TO SOLIDSTATE (SOFT START)
h. DESIGNS FOR INDUSTRIAL RELAY TESTING EQUIPMENT USED BY OEM
i. DESIGN OF DATA TRANSFER BY CONTROLLER TO CONTROLLER
j. LIVE SEARCH ROBOT BASED ON MSN LIVE SERACH USING JAVA/JEE
k. VOICE ACTIVE ROBOTS BASED ON HM SPEECH RECOGNITION IC
l. VOICE ACTIV..................[:=> Show Contents <=:]



Free Space Optics FSO communications


Posted by: computer science crazy
Created at: Sunday 20th of September 2009 05:25:14 AM
Last Edited Or Replied at :Sunday 20th of September 2009 05:25:14 AM
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istances of several kilometers.

As long as there is a clear line of sight between the source and the

destination, and enough transmitter power, Free Space Optics (FSO)

communication is possible.
The FSO Laser technology

Laser (Light Amplification by Stimulated Emission of Radiation)

generates light, either visible or infrared, through a process known as

stimulated emission. To understand stimulated emission,

understanding two basic concepts is necessary. The first is

absorption which occurs when an atom absorbs energy or photons.

The second is emission which occurs ..................[:=> Show Contents <=:]



DISTRIBUTED WIRELESS COMMUNICATION SYSTEM Download Full Report And Abstract


Posted by: computer science crazy
Created at: Saturday 21st of February 2009 01:22:15 PM
Last Edited Or Replied at :Thursday 06th of October 2011 11:02:45 PM
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al times before going into the expressway.
The expressway is used insufficiently, since few cars are running on it.


In telecommunications, the optical fiber network (expressway) is relatively much cheaper than the wireless spectrum (little paths), while the capability of the former is much greater than that of the later. As shown in Fig. b, besides the backbone expressway, there are some dedicated subexpressways used to provide direct entrance for distributed subscribers.The above example implies that the high-capacity wired network, being so cheap, can help us solve the problem of wir..................[:=> Show Contents <=:]



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